Exercise

I've started exercising again. Exercise is something I've never been consistent with, eating on the other hand... well, I've been consistent with that. This unequal balance is the reason for the extra weight around my waist.
In the past I have tried Pilates, Slim in Six, running, and now I'm working out will Billy Blanks and his Tae Bo tapes. I would love to be able to afford some exercise equipment, especially a treadmill. I really like running, but it is hard trying to go running when you don't have a jogging stroller, and it's dark before your husband leaves for work and after he gets home.
I've had success in trying each of those programs, they all do different things and I haven't followed the diet for any of them. I find just cutting back on the amount of food I eat not what I eat, works best for me.
So what happens? Why do I stop working out consistently? I'll work out for months then suddenly I just don't feel like it. So I stop. I loved the Slim in Six work out videos. I was borrowing them from my neighbor, I had been doing them for about 3 months when I found out I was pregnant. So I stopped. They were too hard for me to do and feel safe. I got bored with pilates because it was toning my body but not getting rid of the fat that covered the muscles. Under the excess weight there were some pretty nice muscles I'm sure.
what works for you? are you consistent? Do you use a treadmill or some other equipment? or is a video your choice to work out with?